jenn, i think spencer and samantha are doing pretty good. i know it's hard to hear in the pr how huge some of those kids are, that's how it was for me with my older son. i have a niece that is 9 months old and weighs as much as jack (13.5 lbs) and he's only 3 months old. she's been tested for EVERYTHING and they can't find why she's not gaining. they are concentrating her formula and my SIL focuses mostly on her getting formula and not as much on the solids. i wouldn't worry too much about it. seeing the FTT dx is scary but, like with my son brandon, they may just be slow gainers. hugs, hun, i really think they are doing great!